Left: HGPS significance map (with a correlation radius of 0.1°) toward the region of HESS J1632−478. The dashed and solid yellow circles indicate the Gaussian σ extent and the R_spec of HESS J1632−478, respectively. A high-mass X-ray binary (HMXB) and the pulsar PSR J1632−4757 are located within the R_spec. The H.E.S.S. contours from 3σ to 11σ appear in cyan. The γ-ray excess studied in this work is located within the white box (with a peak significance of ~8), near the pulsar PSR J1633−4805 and the uncertain SNR G336.7−0.3. The white circle represents the radio flux extraction region R_ON. Right: MGPS-2 map at 843 MHz of the region within the white box seen in the left panel. The instrument beam is given on the top left corner. The dashed orange and red circles correspond to the cataloged MC (Rice et al. 2016) and H II regions (Anderson et al. 2014), respectively. The pink cross represents a source reported in the Galactic O star catalog (Maíz Apellániz et al. 2013), while the green circles indicate the σ extent (containing the PSF) of the XMM-Newton extended sources (Webb et al. 2020). The contours and solid circles are the same as in the left panel.